For the following models
BSA Junior
NVT Ranger
BSA NVT Easyrider Single Speed Franco Morini M01 Engine
BSA NVT Easyrider Single Speed Franco Morini M1 Engine
BSA NVT Easyrider Two Speed Franco Morini M02 Engine
BSA Easyrider Single Speed Kickstart Reed Valve Franco Morini M1K Engine
NVT ER4L ER4TL Easyrider Sport Franco Morini M04 Engine (LOWER RING ONLY)
You still get two rings if you are ordering for Sport model but will need a different upper ring.